Shot-cartridge.



No. 645,546. Patented Wiar. 20, |900. H. J. BLANCH.

SHOT CARTRIDGE.

(Application filed Nov. 6, 189B.)

(No Model.)

Nrrnn Srarns PATENT @errent IIERBRT JOHN BLANCH, OF LONDON, ENGLAND.

SHOT-CARTRIDGE'.

SPECIFICATION formingpart of Letters Patent N o. 645,546, dated March 20, 1900. vApplication tiled Nvem-llel 6,1899- Serial No. 736,018'. (No model.)

To aZZ whom it 11o/ay concern:

Beit known that I, HERBERT JOHN BLANCH,

a subjectief the Queen of Great Britain, re-

siding at 29 Gracechurch street, in the city of London, England, have invented new and usev ful Improvements in Shot- Cartridges, of which the following is a specification.

This invention relates to improvements in waterproof cartridges such as are used in Shotguns.

According to the invention I construct the improved cartridge cfa metal case of proper length for receiving the charge and a Wad or stopper. The wad or stopper which I use comprises a metal disk having a beaded edge, the said disk being adapted to be inserted in the mouth of the metal case with the bead outermost, so that the end of the case can be turned over on the edge of the bead, thereby making a close-fitting joint.

The edge of the stopper may project above the edge of the case, so that when both are turned in the rounded edge may be formed partly by the edge of the stopper and partly by the inturned edge of the cartridge-case.

I sometimes make the wad or stopper of paper-pulp or other similar suitable material. In this case the said wad is advantageously made of a disk of the material formed with a doubly-bent projecting edge upon which the edge of the cartridge-case is turned in.

To enable the invention to be fully understood, I will describe'the same by reference to the accompanying drawings, in which- Figure 1 is a sectional elevation, drawn to an exaggerated scale, of a cartridge-case and metal Wad constructed according -to the invention. Fig. 2 is a vertical section of my metal wad or stopper. Fig. 3 is a view similar to Fig. 1 of the cartridge-case Without the wad, and Figgt is a vertical-section of the end of a cartridge-case having a wad or stopper of paper-pulp or other similar suitable material. i

ais the cartridge-case, which is made of sufticient length, as above described, and a' is a lpaper lining. This paper lining ar is preferably tapered or chamfered at the end of the case-a which receives the wad b to insure that the metal edge alone of the case grips the wad. In the construction shown in Figs. 1, 2, and 3 the wad is formed of a` metal disk having its edge bent upward and inward to provide a rounded bead, as shown at b' in Figs. 1 and 2. This wad is inserted into the -mouth of the cartridge-case a, (shown in Fig. 3,) and the said end is turned over onto the bead b', as shown in Fig. 1.

Fig. 4 shows a cartridge-case having a wad of paper-pulp or other similar suitable material. The said wad consists of a disk b, having its edge turned up, as shown at b2, and then down, as shown at b3, thereby forming the rounded bead upon which the metal edge of the case a is turned in. The double bend b2 b3 at the edge of the disk b provides the necessary stiffness where required.

Instead of making the wads or Stoppers as hereinbei'ore described I can employ a stopper consisting of a disk of suitable material having upon its face a ring preferably semicircular in cross-section. This ringmay be formed integral with or separately from the disk, in which latter case the disk may be of one material and the ring of another.

Although I have shown a cartridge-case provided with a paper lining, it will be obvious that the invention is'also applicable to cartridges having a metal case without such paper lining.

WVads constructed and fitted to cartridges as hereinbefore described are sufficient to keep the cartridge efticiently closed until it is tired and also to offer suiicient resistance to enable the proper combustion of the powder'totake place. Furthermore, on firing the wad properly opens the turned-over portion of the case without its being necessary t-o open the beading of the wad. This method of `stoppering also provides a convenient finish to the mouth ofY the case for handling and enables a full-length metal cartridge-case to be used without the disadvantages hitherto attached to such cases-namely, the sharp and inconvenient finish at the mouth or the exposed portion of paper, which by becoming damp swells and may jam lin the cartridgechamber on loading or ejecting.

' Having now'particularly described and ascertained the nature of my said invention and iu what manner the same is to be performed, I declare that what I claim is IOO 2. A closingrwad or sfopper fora. cartridge' x 'consisting of a disk having its edge portions 'bent upward rounded over and bent downward to form an annular rounded bead substantially as described. v HERBERT- JOHN BLANCH.` Witnesses:

A. Amsutrr,V

WALTER J SKERTEN. 

